With rotation if master and slave shall rotate the same amount you should set 1 as deltaAddDelta value. Rotation is everytime from 0 to 360 regardless of the diameter of the rotating parts.

With rotating everytime in the same direction regardless if the master goes positive or negative ... hm, not completely sure, but it should be possible. But it's rather tricky with additonal hidden dummy delta-dials.

You should have a look into the poser technical forum here at rendo. LesBentley has just written something about delayed ERC movements. This is the way to go even here.
And additional I have there named 2 links for additonal tutorial for this. In the tutorial at the second link you will find all information to solve your problem, I guess.